Our specialized experience includes design for data centers, healthcare, science and technology, high-rise buildings, clean energy, education, and other building types as well as structural and building sciences, infrastructure asset management, advanced robotics, and more. Job Summary: The Senior Mechanical Design Engineer will provide hands-on mechanical and opto-electro-mechanical design support for complex experimental, pulsed power, high-voltage, accelerator, diagnostic, and other mission-critical hardware in research and production environments with the Lawrence Livermore National Laboratory in Livermore, CA.